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The effect of environmental factors on migratory activity of adult river lampreys entering the Kalajoki and Perhonjoki, rivers in… Expand Aronsuu, Kimmo Lotic life stages of the European river lamprey (Lampetra fluviatilis): anthropogenic detriment and rehabilitation… Expand The Iberian Peninsula is a repository for biodiversity, presenting high levels of endemism in both plants and animals. In this… Expand Several populations of river lamprey have declined across Europe over recent years and have been extirpated in some rivers. As a… Expand SynopsisThe distribution and activities of several oxidative enzymes in the urinary apparatus of five freshwater fish species… Expand SummaryThe vestibular fibres of ammocoetes of Lampetra planeri form a peculiar type of synaptic contact with the large nerve… Expand Summary1.The formation of the Reissner fibre in Lampetra planeri was studied by fluorescence and electron microscopy.2.The… Expand 1. Sodium influx in ammocoete larvae increases exponentially with external sodium concentration (0-1.0 mM/l.) and sodium-depleted… Expand 1. The circulatory response of anaesthetized curarized Squalus acanthias to anoxia of 2 min. duration is described. Anoxia was… Expand